1998 MY9

1998MY9, 1999 UR42, 1999UR42, 40080, J98M09Y, J99U42R

All data for this body: [vot]

MPC data
Name (number) 1998 MY9 (40080)
a 2.79262
e 0.14715
i / sin(i) 16.7246 / 0.28777
q 2.38168
Q 3.20356
ω 149.5695
Node 228.2986
m 175.9501
n 0.2112
Epoch 2460800.5
nobs 3387
nopp 22
Years observed 1998-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Watsonia (729)
 
ap 2.794
ep 0.122
sin(ip) 0.297
G 0.150
H 13.960
Mass
D 7.51 0.183
pV 0.114 0.0193
Value
Rotational Period 14.240
Period quality 2
Spectral Class L
Spectral Class Score 10.082
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
729 Watsonia 0 Watsonia Novakovic 2019EPSC...13.1671N HCM
729 Watsonia 537 Watsonia Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7939 0.1222 0.2966 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.51 0.183 0.183 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.114 0.0193 0.0193 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.96 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
14.2157 2 Synodic Pal 2020ApJS..247...26P Lightcurve
14.243 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D L 0.4604 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
L 0.41 Bus VIS Carvano 2010A&A...510A..43C PHOT
L L 0.5641 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L L 0.6463 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT